Individual methyl-donor nutrients (MDNs) intake of the HS and obesity (OB)-stratified participants. The habitual intake of folate (A), choline (B) and betaine (C) in the HS and OB-stratified subjects was assessed by quantitative food frequency questionnaire (qFFQ). OB was defined by BMI (≥30 kg/m2), waist/hip circumference ratio (men ≥ 0.9 and female ≥ 0.85), or visceral adiposity grade (>10) or percentage body fat (men ≥ 25% and women ≥ 32%). All intakes are expressed as per kg body weight values. The data are presented as medians and interquartile range (25th, 75th). Variables were compared using the non-parametric test of Kruskal–Wallis. Values with different letter differ significantly at p < 0.05. Abbreviations: BW, body weight; DFE, dietary folate equivalent; NOB, non-obesity.